{"id":"EUVD-2026-25280","revision":"fc9a377d98434af993d2e8a3f15dc295","records":[{"revision":"fc9a377d98434af993d2e8a3f15dc295","observedAt":"2026-10-30T06:50:19.613+00:00","statement":{"source":"euvd","id":"EUVD-2026-25280","aliases":["CVE-2026-41246"],"title":"Contour is a Kubernetes ingress controller using Envoy proxy. From v1.19.0 to before v1.33.4, v1.32.5, and v1.31.6, Contour's Cookie Rewriting feature is vulnerable to Lua code injection. An attacker with RBAC permissions to create or modif…","description":"Contour is a Kubernetes ingress controller using Envoy proxy. From v1.19.0 to before v1.33.4, v1.32.5, and v1.31.6, Contour's Cookie Rewriting feature is vulnerable to Lua code injection. An attacker with RBAC permissions to create or modify HTTPProxy resources can craft a malicious value in spec.routes[].cookieRewritePolicies[].pathRewrite.value or spec.routes[].services[].cookieRewritePolicies[].pathRewrite.value that results in arbitrary code execution in the Envoy proxy. The cookie rewriting feature is internally implemented using Envoy's HTTP Lua filter. User-controlled values are interpolated into Lua source code using Go text/template without sufficient sanitization. The injected code only executes when processing traffic on the attacker's own route, which they already control. However, since Envoy runs as shared infrastructure, the injected code can also read Envoy's xDS client credentials from the filesystem or cause denial of service for other tenants sharing the Envoy instance. This vulnerability is fixed in v1.33.4, v1.32.5, and v1.31.6.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":8.1,"severity":null}],"references":["https://github.com/projectcontour/contour/security/advisories/GHSA-x4mj-7f9g-29h4","https://github.com/projectcontour/contour/releases/tag/v1.31.6","https://github.com/projectcontour/contour/releases/tag/v1.32.5","https://github.com/projectcontour/contour/releases/tag/v1.33.4"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-25280","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 23, 2026, 6:44:39 PM","dateUpdated":"Jul 15, 2026, 12:59:40 AM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-25280","identifiers":["EUVD-2026-25280","CVE-2026-41246"]},"retained":false,"historicalAffected":[]}],"coverage":[]}